code: def __init__(
      self, raw_dir, processed_dir, self_loop=True, reverse_edge=True
  ):
      self.raw_dir = raw_dir
      self.processd_dir = processed_dir
      self.self_loop = self_loop
      self.reverse_edge = reverse_edge
  
file_path: dgl/examples/pytorch/evolveGCN/dataset.py
imports: import os
  import dgl
  import numpy
  import pandas
  import torch
label_desc: Use image node_id 1 to create a new EllipticDataset object  with example: obj = EllipticDataset(raw_dir, processed_dir, _loop, reverse_edge)